diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ref/create_function.sgml | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/create_function.sgml b/doc/src/sgml/ref/create_function.sgml index 639647eab3c..ca9eca5138d 100644 --- a/doc/src/sgml/ref/create_function.sgml +++ b/doc/src/sgml/ref/create_function.sgml @@ -1,5 +1,5 @@ <!-- -$PostgreSQL: pgsql/doc/src/sgml/ref/create_function.sgml,v 1.83 2008/12/18 18:20:33 tgl Exp $ +$PostgreSQL: pgsql/doc/src/sgml/ref/create_function.sgml,v 1.84 2008/12/31 02:25:03 tgl Exp $ --> <refentry id="SQL-CREATEFUNCTION"> @@ -25,6 +25,7 @@ CREATE [ OR REPLACE ] FUNCTION [ RETURNS <replaceable class="parameter">rettype</replaceable> | RETURNS TABLE ( <replaceable class="parameter">colname</replaceable> <replaceable class="parameter">coltype</replaceable> [, ...] ) ] { LANGUAGE <replaceable class="parameter">langname</replaceable> + | WINDOW | IMMUTABLE | STABLE | VOLATILE | CALLED ON NULL INPUT | RETURNS NULL ON NULL INPUT | STRICT | [ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER @@ -242,6 +243,20 @@ CREATE [ OR REPLACE ] FUNCTION </varlistentry> <varlistentry> + <term><literal>WINDOW</literal></term> + + <listitem> + <para> + <literal>WINDOW</literal> indicates that the function is a + <firstterm>window function</> rather than a plain function. + This is currently only useful for functions written in C. + The <literal>WINDOW</> attribute cannot be changed when + replacing an existing function definition. + </para> + </listitem> + </varlistentry> + + <varlistentry> <term><literal>IMMUTABLE</literal></term> <term><literal>STABLE</literal></term> <term><literal>VOLATILE</literal></term> |